“He is a nice guy, but I will say the truth: A little bit of him has changed,” Waters told Steelers beat writer Mark Kaboly. “It is really not my situation to speculate at this point, but he is not the same Michael Sam anymore.”

Waters went on to say that he doesn’t speak with Sam anymore, but Waters added that Sam, who is in training camp with the St. Louis Rams, acts different and carries himself different after publicly announcing that he is gay in February before the NFL Combine.

“I was watching the NFL Network the other day and I think it was Marshall Faulk who said that he keeps referring to himself in the third person as Michael Sam this, Michael Sam that,” Waters said. “That’s not the same guy we knew back when we were living together. He is not the same fun-loving, joking guy that really didn’t care about stuff like publicity.”

Waters, who had been one of Sam’s most outspoken supporters, caught eight passes at Missouri, which transitioned its offense away from throwing to the tight end in recent seasons.

Still, Waters, buoyed by an excellent Pro Day, caught on with the Steelers as an undrafted free agent and is battling for the third tight end spot behind Heath Miller and Matt Spaeth.

Waters left practice Thursday with a lower back injury, according the Kaboly.